using Microsoft.Extensions.DependencyInjection;
using Orleans.Hosting;
using Orleans.TestingHost;
using Vanguard.Rules.Cards;
using Vanguard.Rules.Engine;
using Vanguard.Server.Configuration;
using Vanguard.Server.Matches;
using Vanguard.Server.Matches.Orleans;
using Vanguard.Server.Storage;
using Vanguard.Shared.Protocol;

namespace Vanguard.Server.Tests;

public class OrleansMatchTests
{
    private static readonly DateTimeOffset Start = new(2026, 10, 21, 12, 0, 0, TimeSpan.Zero);

    [Fact]
    public async Task Grain_Initializes_Attaches_And_Submits_Intent()
    {
        var time = new FakeTimeProvider(Start);
        var connections = new MatchConnectionRegistry();
        var results = new RecordingResultSink();

        var builder = new TestClusterBuilder();
        builder.AddSiloBuilderConfigurator(new SiloConfigurator(time, connections, results));
        var cluster = builder.Build();

        try
        {
            await cluster.DeployAsync();

            var actor = cluster.Client.GetGrain<IMatchActor>("orleans-match");
            var setup = new MatchSetup(
                "orleans-match",
                GameMode.ClassicRanked,
                new MatchSeatSetup("p1", ServerTestData.BuildDeck(), 1000),
                new MatchSeatSetup("p2", ServerTestData.BuildDeck(), 1000));

            await actor.InitializeAsync(MatchSetupData.From(setup));

            var first = new FakeMatchConnection();
            connections.Register("orleans-match", 0, first);

            Assert.True(await actor.AttachAsync(0, "p1", 0));

            var hello = first.All<ServerHello>().Single();
            Assert.Equal(0, hello.PlayerIndex);
            Assert.False(hello.Resumed);

            var snapshot = first.All<ServerSnapshot>().Single().View;
            Assert.Equal(5, snapshot.Players[0].Hand.Count);
            Assert.Empty(snapshot.Players[1].Hand);

            var summary = await actor.GetSummaryAsync();
            var intent = new ClientIntent
            {
                IntentId = "orleans-intent-1",
                BasedOnSeq = summary.EventSeq,
                Intent = new FinishMulliganIntent(),
            };

            await actor.SubmitAsync(0, ProtocolSerializer.Encode(intent));

            var accepted = first.Last<ServerIntentResult>();
            Assert.True(accepted.Accepted);

            var after = await actor.GetSummaryAsync();
            Assert.True(after.EventSeq >= summary.EventSeq);
            Assert.True(await actor.HasPlayerAsync("p1"));
            Assert.False(await actor.HasPlayerAsync("stranger"));
        }
        finally
        {
            await cluster.StopAsync();
            cluster.Dispose();
        }
    }

    private sealed class SiloConfigurator : ISiloConfigurator
    {
        private readonly FakeTimeProvider _time;
        private readonly IMatchConnectionRegistry _connections;
        private readonly IMatchResultSink _results;

        public SiloConfigurator(
            FakeTimeProvider time,
            IMatchConnectionRegistry connections,
            IMatchResultSink results)
        {
            _time = time;
            _connections = connections;
            _results = results;
        }

        public void Configure(ISiloBuilder siloBuilder)
        {
            siloBuilder.ConfigureServices(services =>
            {
                var options = ServerTestData.SmallOptions();

                services.AddSingleton(ServerTestData.Catalog);
                services.AddSingleton(options);
                services.AddSingleton<TimeProvider>(_time);
                services.AddSingleton<IMatchResultSink>(_results);
                services.AddSingleton<IMatchStore, NullMatchStore>();
                services.AddSingleton<IMatchConnectionRegistry>(_connections);
                services.AddLogging();
            });
        }
    }
}